EP 1964814 A1 20080903 - Aeration device for clarifiers
Title (en)
Aeration device for clarifiers
Title (de)
Belüftungseinrichtung für Klärbecken
Title (fr)
Dispositif d'aération pour des réservoirs de décantation
Publication
Application
Priority
EP 07004096 A 20070228
Abstract (en)
The aerator for clarification tanks, comprises polyurethane walls having perforation, in the form of air discharge openings (2), which are formed in slit, ring and/or I-form. The aerator is formed as a tube (1) and the perforation extends itself over a part of the length and the periphery of the tube. A part of the aerator is treated with a lubricant or fungicide. The aerator and/or its walls are produced through the addition of diphenylmethane-4,4'-diisocyanate and/or toluene diisocyanate as diisocyanate component during extrusion.
Abstract (de)
Beltiftungseinrichtung zur Belüftung von Klärbecken aus thermoplastischem Polyurethan, wobei das Polyurethan aus polymeren Ethereinheiten und/oder polymeren Estereinheiten aufgebaut ist, die durch Urethangruppen miteinander verbunden sind. Die Beluftungseinrichtung weist eine zumindest über einen Teil ihrer Länge verlaufende und zumindest über einen Teil ihres Umfangs verlaufende Perforation auf.
IPC 8 full level
CPC (source: EP)
B01F 23/23122 (2022.01); B01F 23/231231 (2022.01); B01F 23/231232 (2022.01); B01F 23/231281 (2022.01); C02F 3/20 (2013.01); Y02W 10/10 (2015.05)
Citation (search report)
- [X] WO 2004078816 A2 20040916 - NOVEON IP HOLDINGS CORP [US], et al
- [Y] WO 8707475 A1 19871217 - METZ MANNHEIM GMBH [DE]
- [Y] EP 1685946 A1 20060802 - NORRES SCHLAUCHTECHNIK GMBH & [DE]
- [A] DE 20007345 U1 20000706 - AQUACONSULT ANLAGENBAU GMBH BA [AT]
- [A] US 5804105 A 19980908 - ALLISON WILLIAM [GB]
Citation (examination)
- DE 9318675 U1 19940331 - HOEFKEN MARCUS DIPL ING [DE], et al
- US 2003071377 A1 20030417 - THARP CHARLES E [US]
Designated contracting state (EPC)
DE
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07004096 A 20070228